View PI5C3244_86874.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C3244
8-Bit, 2-Port Switch
Features:
* * * * Near-Zero propagation delay 5-ohm switches connect inputs to outputs when enabled Direct bus connection when switches are ON Ultra Low Quiescent Power (0.2A Typical) - Ideally suited for notebook applications * Pin compatible with 74 Series 244 logic devices * Packaging (Pb-free & Green available): - 20-pin 173-mil wide plastic TSSOP (L) - 20-pin 150-mil wide plastic QSOP (Q) - 20-pin 300-mil wide plastic SOIC (S)
Description:
Pericom Semiconductor's PI5C3244 features a set of eight bus switches which is pinout and function compatible with the PI74FCT244T, 74F244, and 74ALS/AS/LS 244 8-bit drivers. Two enable signals (BEn) turn the switches on similar to the enable signals of the 244. The bus switch creates no additional propagation delay or ground bounce noise.
Block Diagram
BE1
Pin Configuration
BE1 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VCC BE2
1B0 2A3 1B1 2A2 1B2 2A1 1B3 2A0
1A0 1A1 1A2 1A3
1B0 1B1 1B2 1B3
1A0 2B3 1A1 2B2 1A2 2B1
BE2
1A3
2A0 2A1 2A2 2A3 2B0 2B1 2B2 2B3
2B0
GND
Pin Description Truth Table(1)
BE1 H L H L BE2 H H L L 1A, 1B Disconnect 1A = 1B Disconnect 1A = 1B 2A, 2B Disconnect Disconnect 2A = 2B 2A = 2B Pin Name BEn A0-A3 B0-B3 GND VCC Description Bus Output Enable (Active LOW) Bus A Bus B Ground Power
Note: 1. H = High Voltage Level L = Low Voltage Level
1
PS7014C
09/2804
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C3244 8-Bit, 2-Port Switch
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature ................................................................. -65C to +150C Ambient Temperature with Power Applied ................................. -40C to +85C Supply Voltage to Ground Potential (Inputs & Vcc Only) .......... -0.5V to +7.0V Supply Voltage to Ground Potential (Outputs & D/O Only) ....... -0.5V to +7.0V DC Input Voltage ......................................................................... -0.5V to +7.0V DC Output Current ................................................................................... 120 mA Power Dissipation ......................................................................................... 0.5W
Note: Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
DC Electrical Characteristics (Over the Operating Range, TA = -40C to +85C, VCC = 5V 5%)
Parameters Description VIH VIL IIH IIL IOZH VIK IOS VH RON Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current High Impedance Output Current Clamp Diode Voltage Short Circuit Current
(3)
Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max., VIN = VCC VCC = Max., VIN = GND 0 A, B VCC VCC = Min., IIN = -18 mA A (B) = 0V, B (A) = VCC VCC = Min., VIN = 0.0V, ION = 48 mA VCC = Min., VIN = 2.4V, ION = 15 mA
Min. 2.0 -0.5
Typ(2)
Max. 0.8 1 1 1
Units V V A A A mA
-0.7 100
-1.2 150 5 10
V m V 7 15 ohm
Input Hysteresis at Control Pins Switch On Resistance(4)
Capacitance (TA = 25C, f = 1 MHz)
Parameters(5) CIN COFF CON Description Input Capacitance A/B Capacitance, Switch Off A/B Capacitance, Switch On Test Conditions VIN = 0V VIN = 0V VIN = 0V Typ Max. 6 6 8 Units pF pF pF
Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at Vcc = 5.0V, TA = 25C ambient and maximum loading. 3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second. 4. Measured by the voltage drop between A and B pin at indicated current through the switch. On-Resistance is determined by the lower of the voltages on the two (A,B) pins. 5. This parameter is determined by device characterization but is not production tested.
2
PS7014C
09/2804
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C3244 8-Bit, 2-Port Switch
Power Supply Characteristics
Parameters Description ICC ICC ICCD Quiescent Power Supply Current Supply Current per Input @ TTL HIGH Supply Current per Input per MHz(4) VCC = Max. VCC = Max. VCC = Max., A and B Pins Open BE1 or BE2 = GND Control Input Toggling 50% Duty Cycle Test Conditions(1) VIN = GND or VCC VIN = 3.4V(3) Min. Typ(2) 0.1 Max. 3.0 2.5 0.25 Units A mA mA/ MHz
1 2 3 4 5 6
Notes: 1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device. 2. Typical values are at Vcc = 5.0V, +25C ambient. 3. Per TTL driven input (VIN = 3.4V, control inputs only); A and B pins do not contribute to Icc. 4. This current applies to the control inputs only and represent the current required to switch internal capacitance at the specified frequency. The A and B inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is guaranteed by design.
Switching Characteristics over Operating Range
PI5C3244 Com. Min Max 0.25 1.5 1.5 5.6 5.2
7
Unit ns ns ns
Parameters Description tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation Delay Ax to Bx Bus Enable Time BEX to Ax or Bx Bus Disable Time BEX to Ax or Bx
(2,3)
Conditions(1) CL = 50 pF RL = 500ohm
8 9 10 11 12 13 14 15
Notes: 1. See test circuit and wave forms. 2. This parameter is guaranteed but not tested on Propagation Delays. 3. The bus switch contributes no propagational delay other than the RC delay of the On-Resistance of the switch and the load capacitance. The time constant for the switch alone is of the order of 0.25 ns for 50 pF load. Since this time constant is much smaller than the rise/fall times of typical driving signals, it adds very little propagational delay to the system. Propagational delay of the bus switch when used in a system is determined by the driving circuit on the driving side of the switch and its interaction with the load on the driven side.
3
PS7014C
09/2804
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C3244 8-Bit, 2-Port Switch
Packaging Mechanical: 20-Pin QSOP (Q)
20
.008 0.20 MIN.
.150 .157
3.81 3.99
Guage Plane
.008 .013 0.20 0.33
.010 0.254
1 .337 8.56 .344 8.74
Detail A
.016 .035 0.41 0.89
.041 1.04 REF
0-6
.058 REF 1.47
.053 1.35 .069 1.75 SEATING PLANE
.015 x 45 0.38
Detail A
.007 .010 .016 .050 0.41 1.27
0.178 0.254
.025 BSC 0.635
.004 0.101 .010 0.254 .008 0.203 .012 0.305
.228 .244 5.79 6.19
X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS
Packaging Mechanical: 20-Pin TSSOP (L)
20
.169 .177
4.3 4.5
1 .252 .260 6.4 6.6 .004 0.09 .008 0.20 .047 1.20 Max 0.45 0.75 .018 .030
SEATING PLANE
.238 .269 6.1 6.7
.0256 BSC 0.65
.007 .012 0.19 0.30
.002 0.05 .006 0.15
X.XX X.XX
DENOTES CONTROLLING DIMENSIONS IN MILLIMETERS
4
PS7014C
09/2804
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C3244 8-Bit, 2-Port Switch
Packaging Mechanical: 20-Pin SOIC(S)
20
1 2
.197 .220 5.00 5.60
1 .272 .295 6.90 7.50 .078 2.00 Max SEATING PLANE .002 Min 0.050
.004 .009
0.09 0.25
3 4 5 6
0.55 .022 0.95 .037 .291 .322 7.40 8.20
.0256 BSC 0.65
.0098 Max. 0.25
X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS
Ordering Information
Ordering Code PI5C3244Q PI5C3244QE PI5C3244L PI5C3244LE PI5C3244S PI5C3244SE Package Code Q Q L L S S Package Type 20-pin QSOP Pb-free & Green, 20-pin QSOP 20-pin TSSOP Pb-free & Green, 20-pin TSSOP 20-pin SOIC Pb-free & Green, 20-pin SOIC
7 8 9 10 11 12 13 14 15
Notes: 1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
Pericom Semiconductor Corporation * 1-800-435-2336 * www.pericom.com
5
PS7014C 09/2804

▲Up To Search▲

Price & Availability of PI5C3244

	To Download PI5C3244 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .